Functionally zero, because he spent all of his time at CM, leaving a ton of space on the wing, skinning players left and right, holding up the ball -- and making Livermore completely anonymous -- and leaving Walker to be both RB and RM.
Dembele had a fucking outstanding game, but never once did I watch the play of the game and tell myself "Dembele is playing on the right today, that's interesting." Instead, my recurring thought was "Dembele is playing exactly where he always does, which means Livermore has no role in this game, and our width on the right hand side is reliant on Walker's pace down the flank."
I've said it before and I'll say it again, Walker should have started at RM, with Naughton given a (first?) Spurs start at his natural position, if only to test out both of their capabilities.
I think that POV has a ton of merit. Walker moves up, keep dembele in the middle and let Naughton play RB.
Of course, the downside, Walker gets his taste of the attack (like Bale did back in the day) and wants no part of the RB position.